[lkml]   [2018]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH V4 1/3] mmc: sdhci: add support for using external DMA devices
On Thu, 27 Dec 2018 at 15:44, Adrian Hunter <> wrote:
> On 11/12/18 11:12 AM, Chunyan Zhang wrote:
> > Some standard SD host controllers can support both external dma
> > controllers as well as ADMA/SDMA in which the SD host controller
> > acts as DMA master. TI's omap controller is the case as an example.
> >
> > Currently the generic SDHCI code supports ADMA/SDMA integrated in
> > the host controller but does not have any support for external DMA
> > controllers implemented using dmaengine, meaning that custom code is
> > needed for any systems that use an external DMA controller with SDHCI.
> >
> > Signed-off-by: Chunyan Zhang <>
> FYI, I am waiting on successful testing before reviewing these patches again.

Yeah, that makes sense, thanks Adrian!

I intend to send out another new patchset after the holidays.
After had another look at omap_hsmmc, I knew something need to be
modified (emailed Faiz about this privately), but I was still not sure
if it can fix the problem Faiz found.

Happy new year to all,

 \ /
  Last update: 2018-12-27 09:04    [W:0.054 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site